b20 timing info?


Al-himself

Al-himself

New Member
Joined
Dec 12, 2010
Messages
101
hi lads,

im currently building my b20.

ive taken delivery of my engine from my builder and i have a quick

question about the timing marks.

upon picking it up he said the block was at TDC and the valve clearances were

set...

today ive put the pumps on and was test fitting the belt when i noticed the

marks were slightly out..

262650_237849399577696_100000579142281_909185_914814_n.jpg


260093_239525156076787_100000579142281_916817_6509159_n.jpg


267590_239346326094670_100000579142281_916285_6785884_n.jpg


sorry for the bad pic, bad light in the garage.

unsure of what to do now, any advice welcome
 
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am i right in what im sayin though, it is out isnt it?

he has over 20+ years experience and dont understand why he would say it

was set when it wasn't.

told me to be careful not the adjust the gears before the belt is on or my valves

will crash
 
Its only out a tooth at the crank , its grand they tend to move without the belt on , just line them up , fit the belt and rotate it..

By adjusting the gears he means adjusting the cam timing on the cam gears , dont touch them
 
surely both cam gears need to be completely vertical for it to be at tdc as well!

cam-off.jpg


yours look to be 5-10 degrees out?
 
Darragh_K said:
Its only out a tooth at the crank , its grand they tend to move without the belt on , just line them up , fit the belt and rotate it..

By adjusting the gears he means adjusting the cam timing on the cam gears , dont touch them
Click to expand...

grand, so put the crank bolt back on, give her a turn and line it up?

also it be alright to pull the cam gears off the cams?

i need to get the timing cover on and my gears are in the way.

stupid questions just dont wanna take any chances
 
Al-himself said:
grand, so put the crank bolt back on, give her a turn and line it up?

also it be alright to pull the cam gears off the cams?

i need to get the timing cover on and my gears are in the way.

stupid questions just dont wanna take any chances
Click to expand...

There is key ways on the cams so can't go wrong putting them back on
 
Vtec6000 said:
There is key ways on the cams so can't go wrong putting them back on
Click to expand...

yup i know, woodruff keys like the crank pully,

but if i try turn the bolt open is there a possibility of spinning the cam itself?
 
Al-himself said:
grand, so put the crank bolt back on, give her a turn and line it up?

also it be alright to pull the cam gears off the cams?

i need to get the timing cover on and my gears are in the way.

stupid questions just dont wanna take any chances
Click to expand...

if your taking the cam gears off you need to lock the cams in place via the holes along the cam plate.

5mmpunches.jpg
 
you will need a DUAL CAMSHAFT TIMING BELT SPROCKET HOLDER, google them. they're around £30-50
 
Al-himself said:
will i bring the engine back down or reset the gears to zero?

dont wanna reset them if he has them set already.
Click to expand...

Well was he meant to have degree'd the cams in as per skunk2's instructions? or just timed them up at zero?
 
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